Measurement of the half-life of Au198 in a nonmetal: High-precision measurement shows no host-material dependence Academic Article uri icon


  • We have measured the half-life of the β- decay of 198Au to be 2.6948(9) d, with the nuclide sited in an insulating environment. Comparing this result with the half-life we measured previously with a metallic environment, we find the half-lives in both environments to be the same within 0.04%, thus contradicting a prediction that screening from a "plasma" of quasifree electrons in a metal increases the half-life by as much as 7%. © 2010 The American Physical Society.

author list (cited authors)

  • Goodwin, J. R., Nica, N., Iacob, V. E., Dibidad, A., & Hardy, J. C.

citation count

  • 6

publication date

  • October 2010